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Featured researches published by Anna Clement.


Journal of Human Evolution | 2012

Tooth wear, Neanderthal facial morphology and the anterior dental loading hypothesis.

Anna Clement; Simon Hillson; Leslie C. Aiello

The Anterior Dental Loading Hypothesis states that the unique Neanderthal facial and dental anatomy was an adaptive response to the regular application of heavy forces resulting from both the masticatory and cultural use of the anterior teeth. Heavy anterior tooth wear frequently observed in Neanderthal specimens is cited as a main source of evidence for heavy forces being applied to these teeth. From this, it might be predicted that the wear shown on the anterior teeth of Neanderthals would greatly exceed that of the posterior teeth and that this differential would be greater than in other hominins with different facial morphologies. In this paper, a new method of examining tooth wear patterns is used to test these predictions in a large assemblage of Late Pleistocene hominins and a group of recent hunter-gatherers from Igloolik, Canada. The results show that all Late Pleistocene hominins, including Neanderthals, had heavily worn anterior teeth relative to their posterior teeth but, contrary to expectations, this was more pronounced in the modern humans than in the Neanderthals. The Igloolik Inuit showed heavier anterior tooth wear relative to their posterior teeth than any Late Pleistocene hominins. There was, however, a characteristic Neanderthal pattern in which wear was more evenly spread between anterior teeth than in modern humans. Overall, the evidence presented here suggests that all Late Pleistocene hominins habitually applied heavy forces between their anterior teeth and that Neanderthals were not exceptional in this regard. These results therefore does not support the Anterior Dental Loading Hypothesis.


Azania:archaeological Research in Africa | 2010

An Urewe burial in Rwanda: exchange, health, wealth and violence c. AD 400

John Giblin; Anna Clement; Jane Humphris

The ‘Urewe culture’ dominates the archaeology of Great Lakes Africa from approximately 500 BC to AD 800. However, whilst much is known about the production and distribution of Urewe ceramics and iron metallurgy, social and symbolic information regarding Urewe users is scarce. Within this context the discovery of an Urewe burial preserving pathological conditions, the products of iron production technology and a long distance exchange artefact, radiocarbon dated to the mid-first millennium AD, is highly significant. This article presents the first human remains analysis of two individuals associated with the ‘Urewe culture’ and the first archaeometallurgical analysis of the products of iron technology during this period. The discussion of these results allows us to explore socially important aspects of Urewe users’ lives, including health, wealth and violence.


American Journal of Physical Anthropology | 2012

Intrapopulation variation in macro tooth wear patterns--a case study from Igloolik, Canada.

Anna Clement; Simon Hillson

The pattern of human tooth wear-the way it varies between teeth in the mouth-is crucial to our understanding of important questions in archeology and paleoanthropology, such as the contrasts in diet and behavior between Neanderthals and early modern humans in Europe and Asia, or with the adoption of agriculture in the Americas. Little is known, however, about the way in which wear patterns develop with increasing age or the way in which they differ between males and females. One explanation is that few living people show the high rates of tooth wear seen worldwide throughout the preindustrial archaeological record. The study described here investigates the macroscopic pattern of tooth wear in a unique group of known age and sex dental casts from living Canadian Inuit from Igloolik. The results show that the Igloolik people possessed a pattern of extremely heavy anterior tooth wear, relative to the first molar and the other posterior teeth, which is attributed to the use of the anterior teeth in cultural practices as well as the extreme and marginal environments in which they lived. Heavy anterior tooth wear was established at an early age and maintained throughout life; statistically significant differences were found between the wear patterns of males and females and are explained in terms of sexual division of labor within the community. This study highlights the need to understand both intra- and interpopulation variation in tooth wear patterns when interpreting patterns in past human groups.


American Journal of Physical Anthropology | 2010

Brief communication: Additional cases of maxillary canine-first premolar transposition in several prehistoric skeletal assemblages from the Santa Barbara Channel Islands of California.

Sabrina B. Sholts; Anna Clement; Sebastian K.T.S. Wärmländer

This article identifies and discusses seven new cases of complete maxillary canine-premolar transposition in ancient populations from the Santa Barbara Channel region of California. A high frequency of this tooth transposition has been previously documented within a single prehistoric cemetery on one of the Channel Islands. A total of 966 crania representing 30 local sites and about 7,000 years of human occupation were examined, revealing an abnormally high prevalence of this transposition trait among islanders during the Early period of southern California prehistory ( approximately 5500-600 B.C.). One of the affected crania is from a cemetery more than 7,000-years-old and constitutes the earliest case of tooth transposition in humans so far reported. The results are consistent with findings by other studies that have indicated inbreeding among the early Channel Islands groups. Together with the normal transposition rates among mainland populations, the decreasing prevalence of maxillary canine-first premolar transposition among island populations across the Holocene suggests that inbreeding on the northern Channel Islands had all but ceased by the end of the first millennium B.C., most likely as a result of increased cross-channel migration and interaction.


Artificial Intelligence | 2007

Tooth use in Aboriginal Australia

Anna Clement; Simon Hillson; I. de la Torre; G. Townsend


Artificial Intelligence | 2008

The ancient cemeteries of Astypalaia, Greece

Anna Clement; Simon Hillson; Maria Michalaki-Kollia


Archaeology International , 16 (2012-2) 59 - 71. (2013) | 2013

‘Do larger molars and robust jaws in early hominins represent dietary adaptation?’ A New Study in Tooth Wear

Anna Clement; Simon Hillson


The 86th Annual Meeting of the American Association of Physical Anthropologists, New Orleans | 2017

Growing up in Çatalhöyük : enamel hypoplasia and history houses

Emmy Bocaege; Anna Clement; Simon Hillson


In: (Proceedings) 82nd Annual Meeting of the American-Association-of-Physical-Anthropologists. (pp. p. 99). WILEY-BLACKWELL (2013) | 2013

Macro tooth wear patterns amongst the early hominins of South Africa.

Anna Clement; Simon Hillson


In: (Proceedings) 81st Annual Meeting of the American-Association-of-Physical-Anthropologists. (pp. p. 117). WILEY-BLACKWELL (2012) | 2012

Why so worn? Tooth wear analysis of the Santa Barbara Channel area Chumash people.

Anna Clement; Simon Hillson

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Simon Hillson

University College London

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Emmy Bocaege

University College London

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Jane Humphris

University College London

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John Giblin

University College London

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G. Townsend

University of Adelaide

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